RE: Initialize a matrix in mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg66787] RE: [mg66742] Initialize a matrix in mathematica*From*: "Erickson Paul-CPTP18" <Paul.Erickson at Motorola.com>*Date*: Tue, 30 May 2006 05:48:44 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

It seems nvid = 5; Table[ i^i, {i, nvid}] Should do what I think you want. Check out Table, Array, etc. in the help files. There are those that would prefer Array[ #^# &, nvid] Do to the explicit use of Array and lack of named iterator, but IMO whichever is clear to the user is probably the preferred. Paul -----Original Message----- From: ashesh [mailto:ashesh.cb at gmail.com] To: mathgroup at smc.vnet.net Subject: [mg66787] [mg66742] Initialize a matrix in mathematica Hi All, Have programmed in another system until now and am trying to shift to Mathematica and facing some diffciulties I would like to create a matrix, say a[ndiv] and would like to initilize all the value to i^2 (or any other value). The size of the matrix is not fixed. The code I tried to use is: ndiv = 5; a = {}; For[i=1, i<=ndiv, i++, a[[i]] = i*i; ]; a This is producing the following error: partw: Part 1 of {} does not exist and so on. I understand that I am not creating a matrix of size 1*ndiv for the data to be fed it. So I tried using Table as follows: a = Table[0,{1},{ndiv}] followed by the above For loop (when I wanted to initialize the matrix with say i*i; Hope some one can help me in doing the above operation Regs.